Weslay23

So I got this 85 Accord hatchback, and instead of just trying to fix or rebuild the carbureted cvcc with 85 horsepower, I decided to drop the entire engine from an SEI fuel injected. of course now I have to be adding an ECU and the wiring harness, or at least part of it, I intend to use only part of the wire harness that is required to run the fuel injection and the engine, and leave the old wiring harness for the rest of the car attached, as it is the base model, and really simplistic, which I like. Has anyone out there done anything like this? Or any advise on how to go about wiring up the injection? Any suggestions, advise, or info would be great, thanks.